港幣（HKD）是香港特別行政區的流通貨幣，首張港幣由東方匯理銀行發行於1845年，距今已經超過179年。港元採用聯繫匯率制度，最初與英鎊掛鉤，但1972年6月英鎊改為自由浮動制後，港府決定將港幣改為與美金掛鉤，並延續至今。港府設定的浮動範圍在1美金兌7.75到7.85港元之間，如果匯率超出此范圍，金管局將出手干預，以維持穩定。在本港的找換店行業，港幣最經常兌換的外幣包括人民幣、日元、菲律賓披索、印尼盾以及美金。

The Macau Pataca (MOP) is the official currency of Macau, first issued in 1894. It is represented by the ISO 4217 code MOP and is commonly denoted as MOP$. The issuance and management of the currency are overseen by the Macao Monetary Authority in the Macau Special Administrative Region. Currently, Macau Pataca banknotes are available in denominations of 10, 20, 50, 100, 500, and 1000 Macau Patacas, along with coins valued at 1 and 5 avos, and 1 and 5 Macau Patacas. All money changers in Hong Kong provide services for exchanging Macau Pataca.